RE: [Paddlewise] Kayak fueling

I'm no expert but it is my understanding that you would only burn muscle if
you in a state of low blood sugar for a long period of time.  It seems that
in order to burn fat you must have some carbo's to tag along, hence the
necessary blood sugar level.  It's not necessary to eat solid foods for this
to work, a sports drink or diluted juice will do just fine.  Too
concentrated of a formula will require digestion - which is time consuming
and diverts bloodflow away from the oxygen carrying task.

For endurance events many athletes use a diluted carbo drink that allows
them to burn fat for fuel rather than just precious glycogen, which is
basically the fuel stored in the muscle.  These athletes need to be careful
to remain below the anaerobic threshold where the body relies entirely on
the glycogen stores (and less on oxygen and fat) and uses them up quickly.
It would seem logical to me you might burn the muscle itself once the
glycogen levels are gone.   But then again it is very difficult to remain
above the anaerobic threshold for a long period of time.

As far as calories burned it is difficult to burn more than 1000 calories /
hour with say cycling or running.  I know padding uses many muscles, but I
don't know if they are equal to the mass of the glutes and quads (the more
muscle mass used the more calories burned).  

 

-----Original Message-----
From: E. Sullivan [mailto:sullivaned_at_pop.mts.kpnw.org]
Sent: Thursday, September 02, 1999 12:52 PM
To: p w
Subject: [Paddlewise] Kayak fueling


I was out yesterday paddling hard and burning muscle and got
to thinking about a thread a while back about frequent
fueling. It struck me as a really bad evolutionary path to
burn muscle before fat. Akin to burning your cloths to keep
warm. Does this muscle-burning occur at moderate levels of
exertion, or just extreme levels? I could see burning muscle
running from a sabretooth, but not plodding along looking
for food.

Any estimates of caloric expense in paddling say, 200 pounds
at 4 mph? I had a big breakfast.

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